Clutch device.



J. A. WILKIN.

CLUTCH DEVICE.

APPLICATION FILED 00121, 1912.

1, 1 1 8,456. Patented Nov. 24, 1914.

WITNESSES diameter as the drivedisk 15, a web member after indicated, and associated with the cas ing is a face plate 23, which may be suitably secured thereto by screws 24: passing through the face plate and turning down into lugs 25 provided for this purpose in the casing;

Within this casing, I employ a series of dogs. These dogs are made in rights and lefts and employed in pairs and areindicated in the drawing at'26. Each dog is provided on one facewith a transverse rib 27, on the oppositeface with a trunnion 28 and a pin 29,- and each dog is also so formed as to be provided with a tooth, 30. Connected to each dogis a spring 31, which may be secured thereto by a suitable screw and washer 32, or otherwise. The dogs 26 are mounted within 1 the casing 19, the face plate thereof being provided with apertures 33, in which the trunnions 28 of the dogs are'journaledfthetransverse rib 27 of each dog passing, into one of the recesses 18 formed in the flange 17 on the drive disk lo, the width of each of these recesses being at least twice the thickness of the transverse rib 27 of each dog. The face plate 23 is also provided with aizseries of elongated apertures 34:, througheach of which the pin 29 of one of the dogs extends, and eXteriorly of the face plate23 each pin 29 is fitted. with a button 35, adapted to turn'freely thereon, and provided with an inclined or tapered face, each button 35 being maintained in position on its pin 29 with its inner face against the outer face of ,the plate 25 by means of a stop 36.: The stop 36 of each dogis secured in positionbya screw 37 passing through the-same and into a tapped opening provided therefor in the trunnion 28 of the dog to which the stop .is

attached. When in position within the cas-' ing, the spring31 Of QaClLClQgLPIIGSSGS against the inner surface of the rim 20 and assists in causing the pin 29- to bear against the in:- nermost end of. the aperture & 34:, through which it passes,-with the tooth 30 of the dog in its innermost position..-

,On the end of -the driven shaft 11,]is, a collar 38, which is fixed'on the shaft by being provided with a rectangular, opening througlrwhich the shaft. passes, or otherwise. Formed integral with or suitably connected to the collar 38, is a ratchet 39, adapted to come within the casing 19. As illustrated in the drawing, this ratchet is preferably provided with-four teeth 40 and int rmediate recesses 41, the extent of the teeth and the width of the recesses beingv substantially equal, and as will be hereinafter eXplained, the teeth of one :pair of dogs are adapted to lie within one pair of the recesses 41, while the teeth of the other pair of dogs are adapted to lie against the faces of the intermediate ratchet teeth d0.

Mounted to turn freely on the collar 38 i is a ring 42. Thisring 42, on one side, is provided with an inclined or tapered face d3, set at the same angle as the inclined faces of the bottoms 35, and on the opposite side of the ring 42, and immediately surrounding the collar 38, there are cams M1. On the bearing block, through which the driven shaft 11 passes, and immediately surrounding the collar'38, thereare similar but opposite cams 4L5,the cams 4A and; being adapted to act, in conjunction with one another to move the ring 12 from its lever, or otherwise, to turn the ring 42.; In

the positions of the hereinbefore described parts, as indicated in Figs. ,2 and 3 of the drawing, the ring 12 is in its extreme righthand position, in which it has not contact with the buttons on any of the dogs 26, so that the springs 31; of these dogs cause the teeth thereof to remain in contact'with the ratchet 39 whenall the-parts are at rest.

As: shown particularly in Figs.-- 2- and 3, the dogs are soarranged; asto be employed in oppositely disposed pairs. That ,is to say, when the teeth of one pair of dogs engage in the recesses 41 of the, ratchet, the teeth of the other pair of dogs rest against the faces of the teeth -Oonthe ratchet and vice versa. It will also bei a-pparent from Figs. 2 and 3 that one pair of .dogs'is adapted to engage the teeth on the'ratchet 39 to turn the driven shaft in onedirection a and the teeth of the other pair of dogs to engagethewratchet to turn the driven shaft in the opposite direction. It being understood, of course, that in order todothis, it is, necessary to reverse the, engine orgprime mover. "It Will-121150 be apparentlthat the arrangement and the width of the recesses between theiteeth and the ratchetare such that in the engagement of the teeth of either pair of dogs with the, teethof the ratchet,

a; y In thepositions as hereinbefore described,

i the springs 31,:1one of which is associated a to drive the disk 15,,the outer endo and as will be apparent,,the drivenishaft was connected tothe drive shaft. Now, by imparting a partial rotation to the ring 42, through the movementof the rack 47 or otherwise, this ring,,by,virtue of the cams Hand 45, may be moved. on the :collar 38 in a, direction from rightpto left, This movement of the ring 42 causes the/inclined face 43-thereof to contact withthe inclined facesof the buttons attached toall the dogs and, as will be obvious, the continued movement of the ring4c2 inr this direction until its left-hand face contacts with the adjacent surface of the casing will swing all the dogsmoutwardlywsufliciently far to free the dog teeth from theratchet teeth and maintain the fdogs 'in this position so long as thering is in its left-hand positions, thereby permitting the drive shaft 10 to turn freely in eitheridirection without imparting :any motions to the driven shaft 11. By turning the ringi42 in the opposite direction, the :ends of the flange portions 17 acting on theribs 27, assisted by the actions of the springs 31, will cause all the dogs to swing i inwardly again, and

the actions of the buttons i against themclined facezofrthe ring will force the same from left-hand to itsbright-hand position, in which, as-w1ll be understood,either one set or the other set of dogs will be brought into play, dependingupon which direction the drive shaft is turned. The disconnected position of the drive and driven shafts is ,shownwin Fig. 1 and, as hereinbefore stated, the connected a position betweenv the i drive and a driven shafts is shown in Figs.2 and 3; a

As heretofore indicated, the functions of with each of the dogs 26,is merely to assist in maintaining the dogs, orthe teeth there of,in contact with thesurface of the ratchet 39, and thesesprings may be entirely dispensed with, if necessarvor desirable, in any given structure. Thejirecesses 18, in the flange 1,7 of the drive disk x15, are of greater width at their inner ends than at their outer endsa Inother words, theends of the segmental portions of the flange 17 are, tapered, as shown particularly in Fig.

3. The sides of, the rib 27,0n1 each dog,

are parallel andthis beinglthe case, and as will be apparent, when the power is applied the edge of a segmental portion :of the flange 17 will contact with the outer, end of the rib 27 on any given dog, the circular motion of the flangetending toiswing the free ends a of one pair of the dogs inwardly to maintain their teethin contact with, the surface a of the ratchet, and to swing thefreeends of the other pair of dogs, outwardly, tofree their teeth from the ratchet, and the construction is such that when the dog is in its driving position, the adjacent faces of the end ofthe segmental portion of the flange and therib 27 of:jthe dogiare in contact with eaclrother foruthcirwentire length. Tlus structure, as will be readilyunden stood, and ashereinbefore stated, makes it possible to dispense entirely with the use of the springs 31, if, for any reason, it appears desirable to do sol i i In the operation of the hereinbefore described mechanism, the drive shaft 10 may turn independently of the drivenshaft 11, when the ringflQ isfmoved from right to left, so as to cause its inclined face toen gage the buttons 35, in order that in acting a through the same allthe dogs 26 may be held in such positions that they cannot engage the teeth 40 of the ratchet 39. When,

however, the ring lQYisshifted in the oppo- 1 site direction and assumes theposition shown in Fig. 1, either one set of dogs 26 orthe other set of the dogs will engage {the teeth of theratchet, depending, as will be moved to apositionin which they cannot 1 engage the teeth of the ratchet. moved n {tClOCliWlSG direction, as the parts When;

are viewed inFig. 2, the upper right-hand dog and the lower left-hand dog; will be moved to engagethe teeth of the ratchet,

while the upper left-handdog and thelower right-hand dog will be moved to position where they icannotengage the teeth of the ratchet. As i is also hereinbefore described,

this sh-iftingof the positions of thed ogs is effected by the drive diskactingqupon the ribs 27011 the sides of the respective dogs; and, aswillbe also understood, the ring l-Q may be turned by suitable rack 47, or in any other desired manner. it

I claim as my invention 1. In a clutch device, a} drive shaft," a

driven shaft in alinement therewith, a drive disk seeured on the-end of the driveshaft, a collar fixedon theendof the driven shaft, a casing at the side, of thedrive diskt a ratchet on thesaid collar, a dogypivotally mountedin the said casing and engaging;

the drive disk, and means for actuatingthe said dog-to permit the same to engagethe ratchetand to cause it to be disengaged from the ratchet.

driven shaft inalinement therewith, a drive 1,2 5 1 2. In a clutch device, a drive shaft,a

disk securedion the end ofthe drive shaft, i

a collar fixed on the end of the driven shaft, a casin'gat the side of the drive disk, a ratcheton the said collar, adog pivotally mounted in the said casing and engaging the drive disk, means. for normally main taining the dog iii-contact with the ratchet, and means for actuating the said'dogto permit the same to engage the ratchet and to cause it to bedisengaged from the ratchet.

3. In a clutch device, a drive shaft, a driven shaft, a drive disk fixedon the end of the drive shaft, a collar secured to the end of the driven shaft, a ratchet on the said collar, a casing associated with the drive disk, a dog pivotally mounted in the casing, a rib on the said dog entering a recess provided therefor between parts of the saiddrive disk to connect the drive disk to the ratchet through-the said dog, and means for actuating the dog to cause the same to be: come disengaged from thesaid ratchet. 4. In a clutch device, a drive shaft, a

I driven shaft, a drive disk fixed on the end of the driveshaft, a collar secured to the end of the driven shaft, a ratchet on the said collar, a casing associated with the drive disk, a dog pivotally mounted in the casing, a rib on the said dog entering a recess provided therefor between parts 'of the said a drive disk to connect the drive disk to the ratchet through the said dog, means for causing the dog to normally contact with the ratchet, and means for actuating the dog to cause the same to become disengaged from the said ratchet.

5. In a clutch device, a drive shaft, a driven shaft, a drive disk fixed on the end of the drive shaft, a collar secured to the end of the driven shaft, a ratchet on the said collar, a; casing associated with the drive disk, a dog pivotally mounted in the casing, a rib on the said ,dogentering a. recessprovided. therefor between parts of the said drive disk to connect the drive disk to the ratchet through the said dog, a spring associated withthe said dog and adapted to bear against the inner surface of the casing to maintain the dog in contact with the ratchet, and means for. actuating the dog to cause the same to become disengaged from thesaid ratchet. V

y 6. In a clutch device, a drive shaft, a driven shaft in alinement therewith, a drive disk fixed on the end of the drive shaft, a collar secured to the end of the drivenshaft, a ratchet on the said collar, a casing associatedwith the drive disk, a .dogpivotally mounted at oneend in the said casing, a rib at the other end of the said dog entering a recess provided therefor between parts of mounted at one end in the said casing, a rib i at the other end of the said dog entering a recess provided therefor between parts of the said drive disk in order to connect the same. with the ratchet through the said dog. a button connected to'the dog eXteriorly of the said casing, a ring'on the collar adapted to engage the said button to swing the dog out of contact with the ratchet, and means for shifting the said ring on itscollar.

' 8. In a clutch device, a drive shaft, a driven shaft'in alinement therewith, a drive disk fixed .on the end of the drive shaft, a collar secured to the end of the driven shaft,

mounted at one end in the said casing,a

rib at the other end of the said dog enter ing a l recess provided therefor between parts of the said drive disk in order to connect the same with the ratchet through the said dog, a button connected to the dog ex teriorly of the said casing, a ring on the collar adapted to engage the said button to swing the dog out of contact with the ratchet, a cam on the said ring, a journal block through'which the driven shaft and collar pass, a cam on the said journal block adapted to co-act with the cam on the ring, and means for turning the ring to cause the said cams to shift the same on its collar to swing the dog out of contact with .the ratchet. l

9. In a clutch deviceya drive shaft, a"

driven shaft in alinement therewith,.a drive disk fixed on theend of the drive shaft,a

collar secured to the end of the driven'shaft,

a ratchet secured to the collar, aring loosely the collar, to swing the said devices out of contact with the ratchet.

10. In a clutch device, a drive shaft, a driven shaft in alinement therewith, a drive disk fixed on the end of the drive shaft, a collar secured to the end of the driven shaft, a ratchet secured to the collar, a ring mounted loosely on the said collar and having an inclined face on one side thereof, a cam on the opposite side of said ring, a bearing blockyacam on the surface thereof, adapted to be engaged by the camonthe said ring face to engagethe said buttonto swing the 10 so as to move the ring OIIlZhB collar longido out of contact with the ratchet.

tudinally of the shaft when a partial rotabigned by me this 28th day of August, tion is imparted to the ring, a dogassoci- 1912. ated With the said drive disk, a pin secured JOSEPH WILKIN in the dog, a button mounted on the pin, a andmeans for imparting a partial rotation Witnesses:

to the said ring to shiftthe same longitu- GEorT. PINCKNEY,

dinally on the collar to cause its inclined J. B. LE BLANG.

Copies lotthis patent maiy be obtained for five cents each, by addressing the Commissioner of Patents,

i Washington, D. Q. i 

